It is a PCI Express board that performs an external device and a digital signal input / output.It is a 12-24VDC photocoupla instruction type equipped with 16 points of photocapula insulation input and 16 points of photocapula in insulation open collector output.All input signals can be used as interrupts.Equipped with a digital filter function, output transistor protection circuit (surge voltage protection, overcurrent protection).Compatible with Low Profile Size Slot, replacing the attached bracket to support the standard size slot.- [Extended module] Bus specification PCI Express Size Low Profile Used connector 1X miniature ribbon 50-pin [Digital input/output] number of input points 16 points Output points 16 points two -way score - Response speed (input) 200μSec (max.) Response speed (output) 200μSec (max.) Operate voltage (input) 12-24VDC Operate voltage (output) 12-24VDC input circuit Photoba plastic insulation input (compatible with sink output) Output circuit Photoba Plastic Insulation Open Collector Output (Sink Type) Built -in power supply -